jstyopin
18.12.2020 •
Mathematics
If x = a + 2b, y=2a – b, and z=.–2b , what is x – y + 2z?
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Ответ:
-a-3b
Step-by-step explanation:
a+2b-2a-b+2(-2b)
-a+b-4b
-a-3b
-(a+3b)
Ответ: